1.5 A I OUT 40 V MAX Vin, LINEAR VOLTAGE REGULATOR CONSTANT CURRENT LED DRIVER

In LED Driver applications the market requires integrated solutions and higher output currents to drive high brightness LEDs. As a result of this market demand, ST has developed the STCS1, a small 1.5 A constant current regulator.

Internal block diagram of STCS1 LED driver

Typical application for STCS1 LED drive

STCS1 Description:This constant current regulator, operating with an input voltage range from 4.5 V to 40 V was specifically designed to supply high brightness LEDs. The output current can be adjusted up to 1.5 A by using an external current-sense resistor in series with the LEDs. A dimming input allows "pulsed" PWM operation. While an open drain pin provides information on possible load disconnection conditions.The device is well suited for applications requiring high-voltage input and it is able to withstand voltage spikes of up to 45 V. It operates over a wide temperature range and has thermal shutdown.

STCS1 Main Advantages:By comparing STCS1 with similar products on the market, or with almost equivalent discrete solutions, the main advantages are the high level of output current (1.5 A), the LED disconnect flag and the small package (MLP) options

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